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                [Baltic2008]Magic Stone                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：162MB</p>			</div>
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                                <h3>题目描述</h3><p><p>给定某个字符串,长度为N,它只由&quot;I&quot;和&quot;X&quot;组成.并且有不超过K对&quot;I&quot;与&quot;X&quot;是相邻的. 例如对于字符串&quot;IXXIIXXX&quot;,它就是XI-8-3,即长度为8,&quot;I&quot;与&quot;X&quot;相邻的对数不超过3. 当然你要说它是XI-8-4也行,甚至于XI-8-K(K&gt;=3).值得注意的是:由于字符串的首尾不 固定,&quot;IXXIIXXX&quot;也可以看成&quot;XXXIIXXI&quot;,但由于每个字符串只有一个序号,因而我们对 这种由于颠倒首尾所产生的字符串,取两者之中字典序较小的那个为基准,当然如果一个 字符串它是回文串的话,那就无所谓了. 现在给定N,K的值,我们可以找到许多满足条件的字符串,现在希望能找出排在第i个的是 哪个字符串,例如N=3,K=2,i=5时,我们可以按字典序找出如下的字符串:&quot;III&quot;, &quot;IIX&quot;, &quot;IXI&quot;, &quot;IXX&quot;, &quot;XIX&quot;,&quot;XXX&quot;.那么排在第5个位置的为&quot;XIX&quot;</p></p><hr/><h3>输入格式</h3><p><p>每行给定N,K,i,含义如上所述 规定:0&lt;=K</p></p><hr/><h3>输出格式</h3><p><p>希望你能找出相应的字符串,如果找不出来就输出&quot;NO SUCH STONE&quot;  input data1: 3 2 5  input data2: 3 2 7</p></p><hr/><h3>样例输入</h3><pre>output data1:
XIX

output data2:
NO SUCH STONE</pre><hr/><h3>样例输出</h3><pre></pre><hr/><h3>提示</h3><p><p>0 &lt;= k &lt; n&lt;= 60  0 &lt; i &lt; 10^18</p>
<p>题解:<a href="/JudgeOnline/upload/201603/dsyoj1310《Magical stones》解题报告.rar">JudgeOnline/upload/201603/dsyoj1310《Magical stones》解题报告.rar</a></p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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